I've been watching football for a very long time. Longer in fact than most of the people on this forum have been alive. Over that time I have noticed a marked decline in the frequency and quality of up-field tackling by defensive backs.
When I attended camp, and I played d-back, I was taught to make contact, wrap up, and drive through to drop the man. He would drop because a person can't run without legs. While growing up watching the game I took my instruction from the pros who had learned the fine art of tackling and tackling well.
When I look at the game today I don't see any D-backs with the first clue as to how to tackle. Many seem to think that slapping a guy on the shoulder as he runs by will make the guy drop. Doesn't happen often. What I do see is D-backs trying for big-hits. A D-back can have a receiver in his sights and the receiver bounces off the hit when all the D-back had to do was lower his shoulders and drive himself in.
Colleges must be getting away from teaching tackling in favour of teaching hitting as that is what drives TV ratings. I can't tell you how sick I am of hearing some dull colour man explode in delight over one big hit but never mentioning the 3-4 hits that missed. Tackling seems to be a dying art. Are their any other old-timers who share my view?